Gas-lamp.



E. E. ALLBEE.

GAS LAMP APPLICATION FILED NOV. 10, 1909.

Patented Jan. 5, 1915.

1-1 k. NORRIS PETERS CO. F'HOTO-LITH 'L. WASHING roN. r) 1' ELMER E. ALLIBEE, OF ARLINGTON, NEW JERsEY, ASSIGNOR TO SAFETY CAR HEATING & LIGHTING COMPANY, A CORPORATION OF NEW JERSEY.

GAS-LAMP.

Specification of Letters Patent.

Patented J an. 5, 1915.

Application filed November 10, 1909. Serial No. 527,132.

To all whom it may concern:

Be it known that I, ELMER E. ALLBEE, a citizen of the United States, residing in Arlington, county of Hudson, and State of New Jersey, have invented new and useful Improvements in Gas-Lamps, of which the following is a description.

My invention pertains to that class of gas lamps in which luminosity is produced by rendering a non-combustible material incandescent by means of a heating flame, one type of such lamp being commonly known in the art of gas lighting as mantle lamps.

The principal object of my invention is to produce a lamp of this character which shall be efficient and of simple and durable construction adapted to withstand the severe usage of railway car lighting and fulfil the very importantv function in this art, of illuminating the deck or ceiling of a car as well as producing good and suliicient illumination for the purpose of reading and the like.

A further and important object of my invention is to produce a lamp of such character that portions thereof shall be similar to or identical with the ordinary well-known flat flame lamp used in the art of car lighting and widely known in the art of railroad equipment as the Pintsch lamp so that the said Pintsch lamps, of which there are many thousands in use, may by slight alteration have incorporated therein the features of my invention in such manner as to convert them from the ordinary fiat flame variety into mantle lamps as will hereinafter more plainly appear.

In the drawing the figure represents a vertical section of my improved lamp.

Referring to the drawings, 1 represents the body ring which is preferably made of cast iron adapted to support the lamp structure and to be held in a given position as by means of suitable arms 2 which are usually four in number. These arms are usually made of tubing and one of the number used as a gas-way to the lamp, said arm being screwed into a ball 3 provided with a gas-way 4.

5 represents a spider casting ordinarily provided with four legs, two of which appear in the drawing and are indicated by the numeral 6. This spider casting is fastened upon the body ring 1 and is provided 19. The nipple is provided with a diaphragm portion having a gasway 7 into which is connected a tube 8 communicating with the gas-way 9 of the body ring l. The spider 5 is provided with the downwardly projecting screw-threaded nipple 10 adapted to have screwed thereon the bushing 11 upon which may be screwed the casting 12 provided with the cross-arms 13 and annular ring portion indicated at 14 and in dotted lines at 15. The member 12 is provided with a downwardly extending portion 16 into which is screwed the member 17 adapted to carry the member 18 upon which is attached a suitable mantle with a gasway 20 communicating with the gas-way 7 and the internal bore 21 of the bushing 11 which is screw-threaded so as to receive the plug 22 carrying a hollow screw made up therein and indicated at 23. The hollow screw 23 is of such dimensions as to leave the annular space 24 between itself and the bore 21 of the bushing 11 and is provided with numerous saw -kerfs 25 which are pointed downwardly as shown in the drawing and connect with the bore of the said member. The plug 22 is provided with the internal bore 26 in communication with the small orifice 27 communicating with the chamber 28 of the member 12, which chamher is in communication with the tubular openings 29 in the cross member 13. The member 17 is provided with the bore 30 communicating with the chamber 28 and with the interior of the a series of openings 31 in the bottom of the said member 17 The annular ring portion 14 of the member 12 carries the spun metal flange 32 upon which rests the mica chimney 33 which fits into the recessed portion 34 of the spider 5.

The top of the spider 5 is provided'with a boss 35 carrying a threaded member 36 which in turn carries the member 37 provided at its outer edge with a screw-thread 38 upon which may be screwed the spinning 39 having a depending cylindrical portion 40 provided with holes 41. Attached to the cylindrical member 40 as by means of small webs or spacing members 42 is the crown member 43 carrying the yielding member 44 preferably made of sheet asbestos or other elastic material adapted to withstand heat and adapted to press downwardly upon the transparent dome 45 against the bosses 46 mantle 19 through top or diaphragm portion of the spider 5 and are shown as flanged over on the underside-thereof at 49 in such manner as to connect with the-interior of the mica chimmay 33-.

The' body'ring 1 i'sprovided with a depending flange 50 against which is tightly fitted the bezel 51 which may be held in the position shown in the drawing as by means of anysuitable hinge and latch (not shown) as desired; The bezel 51 is provided on its inner edge with an asbestos wick 52 upon which rests the lip or flange 53 of the transparent bowl 5t provided at its lower portion with the opening 55. The bowl or globe 54 is held tightly in the bezel 51 as by means of the spun ring 56 drawn downwardly by the screws 57 against the asbestos wick 58 7 upon the top of the lip 53.

The operation of my improved lamp is as follows: A proper gas supply in communication with the tube 2 of the gas supply arm in communication with the gas-way 4L will cause gas to flow through 4:, gas-way 9, tube 8, gas-way 7 and gas-way 20 into the annular chamber 24 from which it will pass through the saw-kerfs 25 into the interior of the plug 22 to a small chamber 26 from which it will issue at high velocity through the small aperture 27 in such manner as to be directed downwardly'with considerable velocity through the chamber 28 into the conduit 30 in such manner as to become mixed with air in the chamber 28 and by passage through conduit 30 act as an injector and draws in air through the tubes 29. A mixture of air and gas issuing from y the openings 30 when lighted will burn within the mantle 19 and render the same incandescent and luminous. The products of combustion passing out through themesh of the mantle 19 will immediately rise and coming. in contact with the cross 13 will cause the'inlet air passing through the openings 29- to become heated. The said products of combustion will then pass into the chamber defined by the mica chimney 33 and thence out throughthe flues 47. The inlet air to support combustion for the main part passes through the opening and owing to theinjectorlaction of the jet issu- .ing from the orifice 27 is drawn inthrough the tubes'29in the manner" above described,

and the tubes 29 are made of sufficient length that they extend beyond the column of products of combustion rising from the heated mantle and therefore draw in air which has not been vitiated and is suitable for support of combustion. While the ve locity of the jet issuing from the orifice 27 is comparatively high the velocity of the flow through the saw-kerfs 25 owing to their larger area is relatively small and if the gas should contain any small particles of dust or foreign material the same is arrested in the chamber 2-1 in an obvious manner.

It will also be evident that with my lamp constructed as shown the light rays below the horizontal and for a considerable number of degrees above the horizontal will be entirely unobstructed. Also that rays may passin an upward direction around the member 12 and cross arms 13 and also through the mica chimney 33 to the dome 45 through which they will pass in such manner as to illuminate the head lining or deck of a car.

Having thus described my invention that which I consider as novel and desire to cover and protect by Letters Patent is as set forth in the following claims:

1. In a lamp, the combination of supporting means; means carried by said supporting means and depending therefrom and terminating in a burner; said support having a laterally-extending gasway therethrough communicating with a passage in the depending means and with the burner; said depending means comprising a body below the supporting means and above the burner provided with laterally-extending portions having passages to supply air to the burner; a chimney resting upon said laterally-extending portions above said burner, and below said supporting means, said portions projecting beyond the chimney and being so shaped and located as to give access to said chimney whereby products of combustion will pass said portions into said chimney and air'will be supplied to the burner from beyond the periphery of the chimney; and a plurality of flues cooperating with the top of said chimney.

tion can pass said portions and enter the chimney and air will be supplied to the burner from points beyond the periphery of the chimney; and a plurality of tlues cooperating with the top of said chimney.

3. A lamp comprising a body member of substantially annular form, a perforated diaphragm and means for carrying the same above said body member, flues registering With the perforations in said diaphragm and extending upwardly therefrom, a chimney embracing the perforations leading to said flues, a depending member carried by said diaphragm, projecting members extending from said depending member below the dia phragm for supporting said chimney and separated to leave openings into said chimney, an incandescent mantle carried by said depending member below said chimney, a burner in operative relation thereto, said burner discharging its products of combustion through the openings of said chimneysupporting member and into said chimney said chimney-supporting member being provided with air ducts communicating with said burner and extending beyond the walls of the chimney.

4. A lamp comprising in its structure a body member of substantially annular form, a perforated diaphragm carried above the same, flues registering with the perforations therein and extending upwardly therefrom, a chimney embracing the perforations lead ing to said flues, an incandescent mantle below the said chimney, a burner in operative relation thereto arranged to discharge its products of combustion into said chimney, and air inlet means comprising radiating flues below said chimney in operative communication with said burner and extending beyond the wall of said chimney.

5. The combination with a lamp structure comprehending a supporting ring, a spider provided with a depending gasway carried Gopies of this patent may be obtained for five cents each, by addressing the thereby, flues carried by the said spider, of a depending member carried by the said spider provided with a depending gas and air duct, a burner in operative relation thereto, a mantle in operative relation to said burner, a chimney below the spider registering with the said fines, and transverse members carried by the said depending member below the chimney and projecting beyond the walls of said chimney and provided with air inlets communicating with the air and gas duct and the interior of the lamp structure beyond the walls of said chimney.

6. In a lamp structure, the combination of a circular supporting member; a diaphragm carried thereby and extending above the same, said diaphragm being provided with apertures extending vertically therethrough and with a transversely-extending gasway; and said diaphragm being provided with a depending nipple having a gasway therethrough communicating with the gasway of the diaphragm; a mixing-chamber supported by the nipple below the diaphragm; a. burner supported by the mixing-chamber, the mixing-chamber and the burner having a gasway therethrough communicating with the gasway of the nipple; a plurality of fines supported by the diaphragm and cooperating with the apertures therethrough; a chimney supported by the mixing-chain ber below the diaphragm and extending into cooperative relation with the fines; and a dome and a globe arranged in cooperative relation to the circular support and inclosing the burner, mixing-chamber, chimney, diaphragm and fines, substantially as described.

ELMER E. ALLBEE.

Witnesses:

EUGENE EBERHARDT, G. R. JEWETT.

Commissioner of Patents,

Washington, D. C." 

